JPH06221395A - Groove vatiable pulley of continuously variable transmission - Google Patents
Groove vatiable pulley of continuously variable transmissionInfo
- Publication number
- JPH06221395A JPH06221395A JP5031335A JP3133593A JPH06221395A JP H06221395 A JPH06221395 A JP H06221395A JP 5031335 A JP5031335 A JP 5031335A JP 3133593 A JP3133593 A JP 3133593A JP H06221395 A JPH06221395 A JP H06221395A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cylinder member
- movable cone
- movable
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/52—Pulleys or friction discs of adjustable construction
- F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
- F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
- F16H63/065—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions hydraulic actuating means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無段変速機の溝可変プ
ーリに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable groove pulley for a continuously variable transmission.
【０００２】[0002]
【従来の技術】従来の無段変速機の溝可変プーリは、例
えば特開平３−１８９４４６号公報に示されているよう
に、可動円すい部材を軸方向に駆動するための２つの油
圧作用室を有している。すなわち、駆動プーリの可動円
すい部材のＶ字溝を形成している円すい状の部分の背面
に油圧を作用する油圧室と、可動円すい部材と一体に結
合される外筒部材の内径部側に設けられる中間壁部材に
油圧を作用する油圧室と、を有している。これらの油圧
室を形成するピストン部材の外径はほぼ等しいため、可
動円すい部材の外周部に固定された外筒部材は可動円す
い部材の外径とほぼ同じ外径のままこれの背面側に伸び
ている。このため、無段変速機のケーシングのうち上記
外筒部材に対応する部分もこれとの干渉を避けるため
に、これよりも更に径の大きい形状とされている。2. Description of the Related Art A variable groove pulley of a conventional continuously variable transmission has two hydraulic action chambers for axially driving a movable conical member, as disclosed in, for example, Japanese Patent Laid-Open No. 3-189446. Have That is, a hydraulic chamber for exerting hydraulic pressure on the rear surface of the conical portion forming the V-shaped groove of the movable cone member of the drive pulley, and the inner cylindrical portion side of the outer cylinder member integrally coupled with the movable cone member are provided. And a hydraulic chamber that applies hydraulic pressure to the intermediate wall member. Since the outer diameters of the piston members that form these hydraulic chambers are almost the same, the outer cylinder member fixed to the outer peripheral portion of the movable cone member extends to the back side of the movable cone member while keeping the same outer diameter as that of the movable cone member. ing. For this reason, in the casing of the continuously variable transmission, the portion corresponding to the outer cylinder member is also formed to have a larger diameter than this in order to avoid interference with the outer cylinder member.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の無段変速機の溝可変プーリでは、上記外筒部材に対
応する部分のケーシングの径方向への寸法が大きいた
め、車両搭載時に他の搭載部品に接触するなどして搭載
性能が劣るという問題がある。本発明は、このような課
題を解決するためのものである。However, in the groove variable pulley of the above-mentioned conventional continuously variable transmission, since the size of the portion corresponding to the outer cylinder member in the radial direction of the casing is large, when it is mounted on the vehicle, another mounting is performed. There is a problem of poor mounting performance due to contact with parts. The present invention is intended to solve such a problem.
【０００４】[0004]
【課題を解決するための手段】本発明は、可動円すい部
材の小径側に作用する油室を形成する第１シリンダ部材
を、可動円すい部材の大径側に作用する油室を形成する
第２シリンダ部材よりも小径にするとともに、上記第２
シリンダ部材の軸方向位置を上記第１シリンダ部材の軸
方向位置よりも可動円すい部材に近づけることにより、
上記課題を解決する。すなわち、本発明の無段変速機の
溝可変プーリは、軸（１４）と一体に回転し軸方向に移
動しない固定円すい部材（１８）と、軸（１４）と一体
に回転し軸方向に移動可能な可動円すい部材（２２）と
により、Ｖ字状溝が形成され、可動円すい部材（２２）
にはこれを軸方向に移動させるための２つの油圧作用室
（２０ａ、２０ｂ）が設けられているものにおいて、油
圧作用室（２０ａ、２０ｂ）は、軸（１４）に一体に固
着される第１シリンダ部材（８２）と、これに結合され
る第２シリンダ部材（８４）と、可動円すい部材（２
２）の内径寄りの位置に固着される第１ピストン部材
（７８）と、可動円すい部材（２２）の外径寄りの位置
に固着される第２ピストン部材（８０）と、から構成さ
れており、第１シリンダ部材（８２）は、軸（１４）に
直交する円形の壁部（８２ａ）と、これの外周部から可
動円すい部材（２２）方向に伸びる円筒状部（８２ｂ）
と、を有しており、第１シリンダ部材（８２）はこれの
壁部（８２ａ）の内径部において軸（１４）に結合さ
れ、第２シリンダ部材（８４）は、軸（１４）に直交す
る円形の壁部（８４ａ）と、これの外周部から可動円す
い部材（２２）方向に伸びる円筒状部（８４ｂ）と、を
有しており、第２シリンダ部材（８４）の円筒状部（８
４ｂ）の径は第１シリンダ部材（８２）の円筒状部（８
４ｂ）の径よりも大径であり、第２シリンダ部材（８
４）は、これの壁部（８４ａ）の径方向略中間位置にお
いて第１シリンダ部材（８２）の円筒状部（８２ｂ）先
端と結合され、第１ピストン部材（７８）は、軸（１
４）に直交する円形の壁部（７８ａ）を有するとともに
可動円すい板（２）と固着され、第１ピストン部材（７
８）の壁部（７８ａ）の外径部が第１シリンダ部材（８
２）の円筒状部（８２ｂ）の内周面に軸方向にしゅう動
可能にはまり合い、略円すい台状の形状の第２ピストン
部材（８０）は、これの内径部において可動円すい部材
（２２）と固着されるとともに外径部が第２シリンダ部
材（８４）の円筒状部（８４ｂ）の内周面に軸方向にし
ゅう動可能にはまり合っており、可動円すい部材（２
２）と第１ピストン部材（７８）と第１シリンダ部材
（８２）とによって囲まれた空間が第１油圧作用室（２
０ａ）を構成し、可動円すい部材（２２）と第２ピスト
ン部材（８０）と第２シリンダ部材（８４）とによって
囲まれた空間が第２油圧作用室（２０ｂ）を構成してい
ることを特徴とする。なお、かっこ内の数字は、後述の
実施例の対応する部材を示す。According to the present invention, a first cylinder member forming an oil chamber acting on a small diameter side of a movable cone member and a second cylinder member forming an oil chamber acting on a large diameter side of a movable cone member are provided. The diameter is smaller than that of the cylinder member, and the second
By making the axial position of the cylinder member closer to the movable cone member than the axial position of the first cylinder member,
The above problems are solved. That is, the variable groove pulley of the continuously variable transmission of the present invention includes a fixed conical member (18) that rotates integrally with the shaft (14) and does not move in the axial direction, and a fixed cone member (18) that rotates integrally with the shaft (14) and moves in the axial direction. With the movable movable cone member (22), a V-shaped groove is formed, and the movable cone member (22)
Is provided with two hydraulic action chambers (20a, 20b) for moving it in the axial direction. The hydraulic action chambers (20a, 20b) are integrally fixed to the shaft (14). One cylinder member (82), a second cylinder member (84) connected thereto, and a movable conical member (2).
2) A first piston member (78) fixed to a position closer to the inner diameter, and a second piston member (80) fixed to a position closer to the outer diameter of the movable cone member (22). The first cylinder member (82) has a circular wall portion (82a) orthogonal to the axis (14), and a cylindrical portion (82b) extending from the outer peripheral portion thereof toward the movable conical member (22).
And the first cylinder member (82) is coupled to the shaft (14) at the inner diameter of the wall (82a) thereof, and the second cylinder member (84) is orthogonal to the shaft (14). A circular wall portion (84a) and a cylindrical portion (84b) extending from the outer peripheral portion of the circular wall portion (84a) toward the movable conical member (22), and the cylindrical portion of the second cylinder member (84) ( 8
4b) has a diameter of the cylindrical portion (8) of the first cylinder member (82).
4b) and has a larger diameter than the second cylinder member (8
4) is coupled to the tip end of the cylindrical portion (82b) of the first cylinder member (82) at a radial intermediate position of the wall portion (84a) thereof, and the first piston member (78) is connected to the shaft (1).
4) has a circular wall portion (78a) orthogonal to the movable cone plate (2) and is fixed to the first piston member (7).
The outer diameter portion of the wall portion (78a) of 8) is the first cylinder member (8).
The second piston member (80), which is fitted in the inner peripheral surface of the cylindrical portion (82b) of (2) so as to be slidable in the axial direction and has a substantially truncated cone shape, has the movable cone member (22) at the inner diameter portion thereof. ), And the outer diameter portion is axially slidably fitted to the inner peripheral surface of the cylindrical portion (84b) of the second cylinder member (84), and the movable cone member (2
2), the space surrounded by the first piston member (78) and the first cylinder member (82) is the first hydraulic chamber (2).
0a), and the space surrounded by the movable cone member (22), the second piston member (80), and the second cylinder member (84) constitutes the second hydraulic action chamber (20b). Characterize. The numbers in parentheses indicate the corresponding members in the examples described later.
【０００５】[0005]
【作用】可動円すい部材の小径側に作用する油室を構成
する第１シリンダ部材を、可動円すい部材の大径側に作
用する油室を構成する第２シリンダ部材よりも小径に
し、第１シリンダ部材の軸方向位置を第２シリンダ部材
の軸方向位置よりも可動円すい部材から遠ざけることに
より、可動円すい部材から遠い位置が小径になり、可動
円すい部材に近い位置が大径になる。これにより、ケー
シングは第１シリンダ部材及び第２シリンダ部材の外形
に沿って形成することができるため、可動円すい部材か
ら遠ざかるほど径方向寸法が小さくなる形状とすること
ができる。The first cylinder member forming the oil chamber acting on the smaller diameter side of the movable cone member is made smaller in diameter than the second cylinder member forming the oil chamber acting on the larger diameter side of the movable cone member, and the first cylinder By making the axial position of the member farther from the movable cone member than the axial position of the second cylinder member, the position farther from the movable cone member has a smaller diameter and the position closer to the movable cone member has a larger diameter. With this, the casing can be formed along the outer shapes of the first cylinder member and the second cylinder member, so that the radial dimension can be reduced as the distance from the movable cone member increases.
【０００６】[0006]
【実施例】図２に無段変速機の動力伝達機構を示す。こ
の無段変速機はトルクコンバータ１２（なお、これはフ
ルードカップリングとすることもできる）、前後進切換
機構１５、Ｖベルト式無段変速機構２９、差動装置５６
などを有しており、エンジンの出力軸１０の回転を所定
の変速比及び回転方向で差動装置５６に伝達することが
できる。この無段変速機は、トルクコンバータ１２（ポ
ンプインペラ１２ａ、タービンランナ１２ｂ、ステータ
ｃ、ロックアップクラッチ１２ｄなどを有している）、
回転軸１３、前後進切換機構１５（遊星歯車装置１９、
前進用クラッチ４０、後進用ブレーキ５０などから成
る）、駆動軸１４（軸）、駆動プーリ１６（固定円すい
部材１８、駆動プーリシリンダ室２０（第１油室２０ａ
（油圧作用室）、第２油室２０ｂ（油圧作用室））、可
動円すい部材２２などからなる）、Ｖベルト２４、従動
プーリ２６（固定円すい部材３０、従動プーリシリンダ
室３２、可動円すい部材３４などから成る）、従動軸２
８、駆動ギア４６、アイドラギア４８、アイドラ軸５
２、ピニオンギア５４、ファイナルギア４４などから構
成されている。FIG. 2 shows a power transmission mechanism of a continuously variable transmission. The continuously variable transmission includes a torque converter 12 (which may be a fluid coupling), a forward / reverse switching mechanism 15, a V-belt type continuously variable transmission mechanism 29, and a differential device 56.
And the like, and the rotation of the output shaft 10 of the engine can be transmitted to the differential device 56 at a predetermined gear ratio and rotation direction. This continuously variable transmission has a torque converter 12 (having a pump impeller 12a, a turbine runner 12b, a stator c, a lockup clutch 12d, etc.),
The rotary shaft 13, the forward / reverse switching mechanism 15 (the planetary gear device 19,
The forward clutch 40, the reverse brake 50, etc., the drive shaft 14 (shaft), the drive pulley 16 (the fixed conical member 18, the drive pulley cylinder chamber 20 (the first oil chamber 20a)).
(Hydraulic action chamber), second oil chamber 20b (hydraulic action chamber), movable cone member 22 and the like), V belt 24, driven pulley 26 (fixed cone member 30, driven pulley cylinder chamber 32, movable cone member 34). Etc.), driven shaft 2
8, drive gear 46, idler gear 48, idler shaft 5
2, a pinion gear 54, a final gear 44 and the like.
【０００７】図２に示した無段変速機の駆動プーリ１６
の部分を図１に詳細に示す。駆動軸１４に一体に固定円
すい部材１８が設けられている。駆動軸１４はベアリン
グ７０及び７２によってケーシング本体７４に回転可能
に支持されている。固定円すい部材１８と対面してＶ字
溝間隔を形成するように可動円すい部材２２が設けられ
ている。可動円すい部材２２は駆動軸１４上にボールス
プライン７６を介して軸方向に移動可能に支持されてい
る。可動円すい部材２２の外周部の固定円すい部材１８
対面側とは反対側に、駆動プーリシリンダ室２０が設け
られている。駆動プーリシリンダ室２０は、第１油室２
０ａ（第１油圧作用室）及び第２油室２０ｂ（第２油圧
作用室）の２つの油室から成っており、これらは、第１
ピストン部材７８と、第２ピストン部材８０と、第１シ
リンダ部材８２と、第２シリンダ部材８４と、から構成
されている。第１ピストン部材７８は、垂直な壁部７８
ａと、これの内径端部から可動円すい部材１８方向に伸
びる円筒状部７８ｂと、から成っており、円筒状部７８
ｂの先端側が可動円すい部材２２の小径側に一体に結合
されている。壁部７８ａの外径部が第１シリンダ部材８
２の円筒状部８２ｂの内周面にはまり合っている。第２
ピストン部材８０は、略円すい台状の形状をしており、
これの内径部が可動円すい部材２２の大径側に一体に設
けられており、外径部が第２シリンダ部材８４の円筒状
部８４ｂの内周面にはまり合っている。第１シリンダ部
材８２は、垂直な壁部８２ａと、これの外周部から可動
円すい部材２２方向に伸びる円筒状部８２ｂと、を有し
ている。壁部８２ａの内径側が駆動軸１４と一体に回転
するように連結されている。第２シリンダ部材８４は、
段付きの垂直な壁部８４ａと、これの外周部から可動円
すい部材２２方向に伸びる円筒状部８４ｂと、を有して
いる。第２シリンダ部材８４は、壁部８４ａの段差部に
おいて第１シリンダ部材８２の円筒状部８２ｂの外径部
が圧入されている。壁部８４ａの内径部は第１ピストン
部材７８の円筒状部７８ｂの外周面とはまり合ってい
る。第２シリンダ部材８４と第１シリンダ部材８２の円
筒状部８２ｂとの間には、第１ピストン部材７８作動時
に、第１ピストン部材７８、第１シリンダ部材８２の円
筒状部８２ｂ及び第２シリンダ部材８４の壁部８４ａに
よって囲まれた部分の油抜きを可能にする通路９９が形
成されている。第１ピストン部材７８及び第２ピストン
部材８０の外径部及び第２シリンダ部材８４の内径部に
はそれぞれシール部材８６、８８及び９０が設けられて
いる。このような構造により、可動円すい部材２２、第
１シリンダ部材８２及び第１ピストン部材７８によって
囲まれた第１油室２０ａが形成され、可動円すい部材２
２、第２シリンダ部材８４及び第２ピストン部材８０に
よって囲まれた第２油室２０ｂが形成される。第１油室
２０ａ及び第２油室２０ｂは第２ピストン部材８０に設
けられた穴９２によって連通しており、また、第１油室
２０ａには可動円すい部材２２に設けられた穴９４及び
駆動軸１４に設けられた穴９６を通して油圧を供給可能
である。第１シリンダ部材８２は第２シリンダ部材８４
よりも軸方向位置が可動円すい部材２２から遠く、また
第１シリンダ部材８２は第２シリンダ部材８４よりも径
方向寸法が小さくなっている。これにより、ケーシング
本体７４に結合されてこれの開口部を封鎖するカバー７
５は、第２シリンダ部材８４及び第１シリンダ部材８２
の段差形状に沿って可動円すい部材２２から遠ざかるほ
ど径方向寸法が小さくなる形状とすることができる。The drive pulley 16 of the continuously variable transmission shown in FIG.
1 is shown in detail in FIG. A fixed cone member 18 is provided integrally with the drive shaft 14. The drive shaft 14 is rotatably supported by a casing body 74 by bearings 70 and 72. A movable cone member 22 is provided so as to face the fixed cone member 18 and form a V-shaped groove interval. The movable cone member 22 is supported on the drive shaft 14 via a ball spline 76 so as to be movable in the axial direction. Fixed cone member 18 on the outer periphery of the movable cone member 22
A drive pulley cylinder chamber 20 is provided on the side opposite to the facing side. The drive pulley cylinder chamber 20 is the first oil chamber 2
0a (first hydraulic working chamber) and the second oil chamber 20b (second hydraulic working chamber).
It is composed of a piston member 78, a second piston member 80, a first cylinder member 82, and a second cylinder member 84. The first piston member 78 has a vertical wall 78.
a and a cylindrical portion 78b extending from the inner diameter end portion thereof toward the movable conical member 18 and having a cylindrical portion 78b.
The tip side of b is integrally connected to the small diameter side of the movable cone member 22. The outer diameter portion of the wall portion 78a is the first cylinder member 8
It fits on the inner peripheral surface of the second cylindrical portion 82b. Second
The piston member 80 has a substantially truncated cone shape,
The inner diameter portion of this is integrally provided on the large diameter side of the movable cone member 22, and the outer diameter portion is fitted to the inner peripheral surface of the cylindrical portion 84b of the second cylinder member 84. The first cylinder member 82 has a vertical wall portion 82a and a cylindrical portion 82b extending from the outer peripheral portion thereof toward the movable conical member 22. The inner diameter side of the wall portion 82a is connected so as to rotate integrally with the drive shaft 14. The second cylinder member 84 is
It has a stepped vertical wall portion 84a and a cylindrical portion 84b extending from the outer peripheral portion thereof toward the movable conical member 22. The outer diameter portion of the cylindrical portion 82b of the first cylinder member 82 is press-fitted into the second cylinder member 84 at the stepped portion of the wall portion 84a. The inner diameter portion of the wall portion 84a fits with the outer peripheral surface of the cylindrical portion 78b of the first piston member 78. Between the second cylinder member 84 and the cylindrical portion 82b of the first cylinder member 82, the first piston member 78, the cylindrical portion 82b of the first cylinder member 82, and the second cylinder when the first piston member 78 operates. A passage 99 is formed to allow oil removal in a portion surrounded by the wall portion 84a of the member 84. Sealing members 86, 88 and 90 are provided on the outer diameter portions of the first piston member 78 and the second piston member 80 and the inner diameter portion of the second cylinder member 84, respectively. With such a structure, the first oil chamber 20a surrounded by the movable cone member 22, the first cylinder member 82, and the first piston member 78 is formed, and the movable cone member 2 is formed.
The second oil chamber 20b surrounded by the second cylinder member 84 and the second piston member 80 is formed. The first oil chamber 20a and the second oil chamber 20b communicate with each other through a hole 92 provided in the second piston member 80, and the first oil chamber 20a has a hole 94 provided in the movable conical member 22 and a drive mechanism. Hydraulic pressure can be supplied through a hole 96 provided in the shaft 14. The first cylinder member 82 is the second cylinder member 84.
The axial position is farther from the movable cone member 22, and the first cylinder member 82 has a smaller radial dimension than the second cylinder member 84. As a result, the cover 7 that is coupled to the casing body 74 and closes the opening of the cover body 74
5 is a second cylinder member 84 and a first cylinder member 82.
The radial dimension can be reduced as the distance from the movable cone member 22 increases along the stepped shape.
【０００８】次に、この実施例の動作について説明す
る。駆動軸１４の穴９６及び可動円すい部材２２の穴９
４を通して第１油室２０ａに油圧を作用させ、また穴９
２を通して第２油室２０ｂに油圧を作用させることによ
り、可動円すい部材２２に対して図１中右方向の力を作
用することができる。これにより第１ピストン部材７８
及び第２ピストン部材８０が図１中右方向に移動し、可
動円すい部材２２を図１中右方向に移動させる（図１中
下半分参照）。この可動円すい部材２２に作用する図１
中右方向の力とＶベルト２６から作用する力とのつり合
いによって可動円すい部材２２の位置が決定される。第
１油室２０ａ及び第２油室２０ｂに作用させる油圧を制
御することにより可動円すい部材２２の位置を変えるこ
とができる。これにより、固定円すい部材１８と可動円
すい部材２２との間のＶ字状溝間隔が可変となり、連続
的に変速比を制御することができる。Next, the operation of this embodiment will be described. Hole 96 in drive shaft 14 and hole 9 in movable cone member 22
Hydraulic pressure is applied to the first oil chamber 20a through
By applying a hydraulic pressure to the second oil chamber 20b through 2 as described above, a force in the right direction in FIG. 1 can be applied to the movable conical member 22. Thereby, the first piston member 78
The second piston member 80 moves to the right in FIG. 1, and the movable cone member 22 moves to the right in FIG. 1 (see the lower half in FIG. 1). FIG. 1 which acts on this movable conical member 22.
The position of the movable conical member 22 is determined by the balance between the force in the middle right direction and the force acting from the V-belt 26. The position of the movable cone member 22 can be changed by controlling the hydraulic pressure applied to the first oil chamber 20a and the second oil chamber 20b. As a result, the V-shaped groove interval between the fixed cone member 18 and the movable cone member 22 becomes variable, and the gear ratio can be continuously controlled.
【０００９】次に、この実施例の組立方法について説明
する。まず、第２ピストン部材８０の内径部を可動円す
い部材２２に一体に取り付ける。次いで、第２シリンダ
部材８４の円筒状部８４ｂの内周面を第２ピストン部材
８０の外径部にはめ合わせて第２シリンダ部材８４を可
動円すい部材２２方向に押し入れる。このとき、第２ピ
ストン部材８０の外径部が第２シリンダ部材８４の最も
壁部８４ａ寄りに位置するまで押し込む。次いで、第１
ピストン部材７８の円筒状部７８ｂの内周面を第２シリ
ンダ部材８４の内径部にはめ合わせて第１ピストン部材
７８を可動円すい部材２２方向に押し入れる。このと
き、第１ピストン部材７８の円筒状部７８ｂ端部を可動
円すい部材２２に圧入する。次いで、第２シリンダ部材
８４、可動円すい部材２２及び固定円すい部材１８を軸
方向に固定し、第１シリンダ部材８２の円筒状部８２ｂ
内周面を第１ピストン部材７８の外径部にはめ合わせて
可動円すい部材２２方向に押し入れる。このとき、第１
シリンダ部材８２の円筒状部８２ｂ端部を第２シリンダ
部材８４の壁部８４ａの段差部に圧入する。これによ
り、駆動プーリシリンダ室２０が組み立てられる。Next, the assembling method of this embodiment will be described. First, the inner diameter portion of the second piston member 80 is integrally attached to the movable cone member 22. Next, the inner peripheral surface of the cylindrical portion 84b of the second cylinder member 84 is fitted to the outer diameter portion of the second piston member 80, and the second cylinder member 84 is pushed in the direction of the movable cone member 22. At this time, the outer diameter portion of the second piston member 80 is pushed until it is located closest to the wall portion 84a of the second cylinder member 84. Then the first
The inner peripheral surface of the cylindrical portion 78b of the piston member 78 is fitted to the inner diameter portion of the second cylinder member 84, and the first piston member 78 is pushed in the direction of the movable cone member 22. At this time, the end of the cylindrical portion 78b of the first piston member 78 is press-fitted into the movable cone member 22. Next, the second cylinder member 84, the movable cone member 22, and the fixed cone member 18 are fixed in the axial direction, and the cylindrical portion 82b of the first cylinder member 82 is fixed.
The inner peripheral surface is fitted to the outer diameter portion of the first piston member 78 and pushed in the direction of the movable cone member 22. At this time, the first
The end of the cylindrical portion 82b of the cylinder member 82 is pressed into the stepped portion of the wall portion 84a of the second cylinder member 84. As a result, the drive pulley cylinder chamber 20 is assembled.
【００１０】図３に第２実施例を示す。可動円すい部材
２２の外周部の固定円すい部材１８対面側とは反対側
に、駆動プーリシリンダ室１００が設けられている。駆
動プーリシリンダ室１００は、第１油室１００ａ（第１
油圧作用室）及び第２油室１００ｂ（第２油圧作用室）
の２つの油室から成っており、これらは、第１ピストン
部材１０２と、第２ピストン部材１０４と第１シリンダ
部材１０６と、第２シリンダ部材１０８と、から構成さ
れている。第１ピストン部材１０２は、円板状の形状を
しており、これの小径部が可動円すい部材２２の小径部
端部に溶接によって一体に結合されている。第１ピスト
ン部材１０２の大径部は第１シリンダ部材１０６の円筒
状部１０６ｂの内周面にはまり合っている。第２ピスト
ン部材１０４は、略円すい状の形状をしており、これの
内径部が可動円すい部材２２の大径側に一体に設けられ
ており、外径部が第２シリンダ部材１０８の円筒状部１
０８ｂの内周面にはまり合っている。第１シリンダ部材
１０６は、垂直な壁部１０６ａと、これの外周部から可
動円すい部材２２方向に伸びる円筒状部１０６ｂと、を
有している。壁部１０６ａの内径側が駆動軸１４と一体
に回転するように連結されている。第２シリンダ部材１
０８は、段付きの垂直な壁部１０８ａと、これの外周部
から可動円すい部材２２方向に伸びる円筒状部１０８ｂ
と、を有している。第２シリンダ部材１０８は、壁部１
０８ａの段差部において第１シリンダ部材１０６の円筒
状部１０６ｂの外径部が接触している。壁部１０８ａの
内径部は０２２の小径部とはまり合っている。円筒状部
１０６ｂの先端には、第１ピストン部材１０２の作動時
に、第１ピストン部材１０２、第１シリンダ部材１０６
の円筒状部１０６ｂ及び第２シリンダ部材１０８の壁部
１０８ａによって囲まれた部分の油抜きを可能とする通
路１２０が形成されている。第１ピストン部材１０２及
び第２ピストン部材１０４の外径部及び第２シリンダ部
材１０８の内径部にはそれぞれシール部材１２２、１２
４及び１２６が設けられている。このような構造によ
り、駆動軸１４、第１シリンダ部材１０６及び第１ピス
トン部材１０２によって囲まれた第１油室１００ａが形
成され、可動円すい部材２２、第２シリンダ部材１０８
及び第２ピストン部材１０４によって囲まれた第２油室
１００ｂが形成される。第１油室１００ａには可動円す
い部材２２に設けられた穴１２８及び０１４に設けられ
た穴１３０を通して、また第２油室１００ｂには可動円
すい部材２２に設けられた穴１３２及び駆動軸１４に設
けられた穴１３４を通して、油圧を供給可能である。な
お、駆動プーリシリンダ室１００以外の構造は第１実施
例と同様である。これにより、第２実施例も第１実施例
と同様の作用、効果を有する。FIG. 3 shows a second embodiment. A drive pulley cylinder chamber 100 is provided on the outer peripheral portion of the movable cone member 22 on the side opposite to the surface facing the fixed cone member 18. The drive pulley cylinder chamber 100 includes a first oil chamber 100a (first
Hydraulic working chamber) and second oil chamber 100b (second hydraulic working chamber)
2 oil chambers, which are composed of a first piston member 102, a second piston member 104, a first cylinder member 106, and a second cylinder member 108. The first piston member 102 has a disc shape, and a small diameter portion thereof is integrally joined to an end portion of the small diameter portion of the movable cone member 22 by welding. The large diameter portion of the first piston member 102 fits on the inner peripheral surface of the cylindrical portion 106b of the first cylinder member 106. The second piston member 104 has a substantially conical shape, the inner diameter portion of which is integrally provided on the large diameter side of the movable cone member 22, and the outer diameter portion of which is the cylindrical shape of the second cylinder member 108. Part 1
It fits on the inner peripheral surface of 08b. The first cylinder member 106 has a vertical wall portion 106a and a cylindrical portion 106b extending from the outer peripheral portion thereof toward the movable conical member 22. The inner diameter side of the wall portion 106a is connected so as to rotate integrally with the drive shaft 14. Second cylinder member 1
Reference numeral 08 denotes a stepped vertical wall portion 108a and a cylindrical portion 108b extending from the outer peripheral portion thereof toward the movable conical member 22.
And have. The second cylinder member 108 includes the wall portion 1.
The outer diameter portion of the cylindrical portion 106b of the first cylinder member 106 is in contact with the step portion 08a. The inner diameter portion of the wall portion 108a is fitted in the small diameter portion 022. At the tip of the cylindrical portion 106b, the first piston member 102 and the first cylinder member 106 are provided when the first piston member 102 operates.
A passage 120 is formed to enable oil removal in a portion surrounded by the cylindrical portion 106b and the wall portion 108a of the second cylinder member 108. Sealing members 122 and 12 are provided on the outer diameter portions of the first piston member 102 and the second piston member 104 and the inner diameter portion of the second cylinder member 108, respectively.
4 and 126 are provided. With such a structure, the first oil chamber 100a surrounded by the drive shaft 14, the first cylinder member 106, and the first piston member 102 is formed, and the movable conical member 22 and the second cylinder member 108 are formed.
A second oil chamber 100b surrounded by the second piston member 104 is formed. Through the holes 128 provided in the movable cone member 22 and the holes 130 provided in the 014 in the first oil chamber 100a, the holes 132 provided in the movable cone member 22 and the drive shaft 14 in the second oil chamber 100b. Hydraulic pressure can be supplied through the hole 134 provided. The structure other than the drive pulley cylinder chamber 100 is the same as that of the first embodiment. As a result, the second embodiment also has the same operation and effect as the first embodiment.
【００１１】[0011]
【発明の効果】本発明によれば、可動円すい部材から軸
方向に遠い側に配置される第１油室を構成する第１シリ
ンダ部材を、可動円すい部材に近い側に配置される第２
油室を構成する第２シリンダ部材よりも小径にしたの
で、これらに沿ってケーシングを形成することができ、
無段変速機を小型化することができる。これにより、車
両に搭載し易くなる。According to the present invention, the first cylinder member constituting the first oil chamber arranged axially farther from the movable cone member is arranged to the second cylinder member arranged closer to the movable cone member.
Since the diameter is made smaller than that of the second cylinder member forming the oil chamber, the casing can be formed along these,
The continuously variable transmission can be downsized. This facilitates mounting on a vehicle.
【図１】本発明の構成を示す図である。FIG. 1 is a diagram showing a configuration of the present invention.
【図２】無段変速機全体の構成を示す図である。FIG. 2 is a diagram showing a configuration of an entire continuously variable transmission.
【図３】本発明の第２実施例を示す図である。FIG. 3 is a diagram showing a second embodiment of the present invention.
１４ 駆動軸（軸） １８ 固定円すい部材 ２０ａ 第１油室（第１油圧作用室） ２０ｂ 第２油室（第２油圧作用室） ２２ 可動円すい部材 ７８ 第１ピストン部材 ７８ａ 壁部 ８０ 第２ピストン部材 ８２ 第１シリンダ部材 ８２ａ 壁部 ８２ｂ 円筒状部 ８４ 第２シリンダ部材 ８４ａ 壁部 ８４ｂ 円筒状部 14 Drive shaft (shaft) 18 Fixed cone member 20a 1st oil chamber (1st hydraulic action chamber) 20b 2nd oil chamber (2nd hydraulic action chamber) 22 Movable cone member 78 1st piston member 78a Wall part 80 2nd piston Member 82 First cylinder member 82a Wall portion 82b Cylindrical portion 84 Second cylinder member 84a Wall portion 84b Cylindrical portion
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡原 博文 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hirofumi Okahara 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.
Claims (1)
しない固定円すい部材（１８）と、軸（１４）と一体に
回転し軸方向に移動可能な可動円すい部材（２２）とに
より、Ｖ字状溝が形成され、可動円すい部材（２２）に
はこれを軸方向に移動させるための２つの油圧作用室
（２０ａ、２０ｂ）が設けられている無段変速機の溝可
変プーリにおいて、 油圧作用室（２０ａ、２０ｂ）は、軸（１４）に一体に
固着される第１シリンダ部材（８２）と、これに結合さ
れる第２シリンダ部材（８４）と、可動円すい部材（２
２）の内径寄りの位置に固着される第１ピストン部材
（７８）と、可動円すい部材（２２）の外径寄りの位置
に固着される第２ピストン部材（８０）と、から構成さ
れており、第１シリンダ部材（８２）は、軸（１４）に
直交する円形の壁部（８２ａ）と、これの外周部から可
動円すい部材（２２）方向に伸びる円筒状部（８２ｂ）
と、を有しており、第１シリンダ部材（８２）はこれの
壁部（８２ａ）の内径部において軸（１４）に結合さ
れ、第２シリンダ部材（８４）は、軸（１４）に直交す
る円形の壁部（８４ａ）と、これの外周部から可動円す
い部材（２２）方向に伸びる円筒状部（８４ｂ）と、を
有しており、第２シリンダ部材（８４）の円筒状部（８
４ｂ）の径は第１シリンダ部材（８２）の円筒状部（８
４ｂ）の径よりも大径であり、第２シリンダ部材（８
４）は、これの壁部（８４ａ）の径方向略中間位置にお
いて第１シリンダ部材（８２）の円筒状部（８２ｂ）先
端と結合され、第１ピストン部材（７８）は、軸（１
４）に直交する円形の壁部（７８ａ）を有するとともに
可動円すい板（２）と固着され、第１ピストン部材（７
８）の壁部（７８ａ）の外径部が第１シリンダ部材（８
２）の円筒状部（８２ｂ）の内周面に軸方向にしゅう動
可能にはまり合い、略円すい台状の形状の第２ピストン
部材（８０）は、これの内径部において可動円すい部材
（２２）と固着されるとともに外径部が第２シリンダ部
材（８４）の円筒状部（８４ｂ）の内周面に軸方向にし
ゅう動可能にはまり合っており、可動円すい部材（２
２）と第１ピストン部材（７８）と第１シリンダ部材
（８２）とによって囲まれた空間が第１油圧作用室（２
０ａ）を構成し、可動円すい部材（２２）と第２ピスト
ン部材（８０）と第２シリンダ部材（８４）とによって
囲まれた空間が第２油圧作用室（２０ｂ）を構成してい
ることを特徴とする無段変速機の溝可変プーリ。1. A fixed cone member (18) that rotates integrally with the shaft (14) and does not move in the axial direction, and a movable cone member (22) that rotates integrally with the shaft (14) and is movable in the axial direction. , A V-shaped groove is formed, and the movable cone member (22) is provided with two hydraulic action chambers (20a, 20b) for axially moving the movable cone member (22). The hydraulic action chambers (20a, 20b) include a first cylinder member (82) integrally fixed to the shaft (14), a second cylinder member (84) coupled thereto, and a movable conical member (2).
2) A first piston member (78) fixed to a position closer to the inner diameter, and a second piston member (80) fixed to a position closer to the outer diameter of the movable cone member (22). The first cylinder member (82) has a circular wall portion (82a) orthogonal to the axis (14), and a cylindrical portion (82b) extending from the outer peripheral portion thereof toward the movable conical member (22).
And the first cylinder member (82) is coupled to the shaft (14) at the inner diameter of the wall (82a) thereof, and the second cylinder member (84) is orthogonal to the shaft (14). A circular wall portion (84a) and a cylindrical portion (84b) extending from the outer peripheral portion of the circular wall portion (84a) toward the movable conical member (22), and the cylindrical portion of the second cylinder member (84) ( 8
4b) has a diameter of the cylindrical portion (8) of the first cylinder member (82).
4b) and has a larger diameter than the second cylinder member (8
4) is coupled to the tip end of the cylindrical portion (82b) of the first cylinder member (82) at a radial intermediate position of the wall portion (84a) thereof, and the first piston member (78) is connected to the shaft (1).
4) has a circular wall portion (78a) orthogonal to the movable cone plate (2) and is fixed to the first piston member (7).
The outer diameter portion of the wall portion (78a) of 8) is the first cylinder member (8).
The second piston member (80), which is fitted in the inner peripheral surface of the cylindrical portion (82b) of (2) so as to be slidable in the axial direction and has a substantially truncated cone shape, has the movable cone member (22) at the inner diameter portion thereof. ), And the outer diameter portion is axially slidably fitted to the inner peripheral surface of the cylindrical portion (84b) of the second cylinder member (84), and the movable cone member (2
2), the space surrounded by the first piston member (78) and the first cylinder member (82) is the first hydraulic chamber (2).
0a), and the space surrounded by the movable cone member (22), the second piston member (80), and the second cylinder member (84) constitutes the second hydraulic action chamber (20b). A variable groove pulley for a continuously variable transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05031335A JP3131064B2 (en) | 1993-01-27 | 1993-01-27 | Variable pulley for continuously variable transmission |
| US08/187,285 US5439419A (en) | 1993-01-27 | 1994-01-27 | Pulley device for continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05031335A JP3131064B2 (en) | 1993-01-27 | 1993-01-27 | Variable pulley for continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06221395A true JPH06221395A (en) | 1994-08-09 |
| JP3131064B2 JP3131064B2 (en) | 2001-01-31 |
Family
ID=12328387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05031335A Expired - Fee Related JP3131064B2 (en) | 1993-01-27 | 1993-01-27 | Variable pulley for continuously variable transmission |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5439419A (en) |
| JP (1) | JP3131064B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133853A (en) * | 1993-11-09 | 1995-05-23 | Nissan Motor Co Ltd | Oil pressure chamber of continuously variable transmission |
| KR100357560B1 (en) * | 1999-12-30 | 2002-10-19 | 현대자동차주식회사 | Pully shaft support for continuously variable transmission |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3097439B2 (en) * | 1994-03-17 | 2000-10-10 | 日産自動車株式会社 | Oil passage structure for continuously variable transmission |
| JP3277087B2 (en) * | 1995-01-10 | 2002-04-22 | 愛知機械工業株式会社 | Continuously variable transmission with movable flange |
| JP3441873B2 (en) * | 1996-02-15 | 2003-09-02 | 富士重工業株式会社 | Pulley structure of belt-type continuously variable transmission and method of coupling movable sheave and hydraulic actuator member of the pulley |
| JP3248615B2 (en) * | 1997-01-24 | 2002-01-21 | 愛知機械工業株式会社 | Cylinder structure for pulley of belt type continuously variable transmission |
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| JPH03189446A (en) * | 1989-12-19 | 1991-08-19 | Nissan Motor Co Ltd | Grooved variable pulley |
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- 1993-01-27 JP JP05031335A patent/JP3131064B2/en not_active Expired - Fee Related
-
1994
- 1994-01-27 US US08/187,285 patent/US5439419A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07133853A (en) * | 1993-11-09 | 1995-05-23 | Nissan Motor Co Ltd | Oil pressure chamber of continuously variable transmission |
| KR100357560B1 (en) * | 1999-12-30 | 2002-10-19 | 현대자동차주식회사 | Pully shaft support for continuously variable transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3131064B2 (en) | 2001-01-31 |
| US5439419A (en) | 1995-08-08 |
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